Leading European battery storage developer Sonnen has announced it will soon launch its Sonnenbatterie product in Australia, joining a host of international and local brand names, including Tesla, LG, Enphase, Panasonic, Samsung, Redflow and Ecoult in tapping into the first big domestic battery storage market in the world. sonnenThe German-based Sonnen, which makes lithium-ion battery storage systems, says it will partner with True Value Solar – the biggest installer in Australia – to offer an all-in-one system of rooftop solar panels and the SonnenBatterie. It also expects to introduce peer-to-peer trading, meaning that households with battery storage will be able to trade energy with neighbours. It has already introduced such a product into Europe.